Gas separation – Combined or convertible – In environmental air enclosure
Patent
1992-07-08
1994-06-21
Hart, Charles
Gas separation
Combined or convertible
In environmental air enclosure
55472, 55500, 454 58, B01D 4610
Patent
active
053225333
ABSTRACT:
A fail-safe air handling and safety system is described. The system is for use by workers during removal of hazardous substances, such as asbestos, lead, and toxic chemicals, from within a structure. The structure has a containment area with air exhaust openings for maintaining the containment area at negative pressure with respect to ambient. A decontamination unit sealingly connects to a doorway in the containment area and provides for an air locked entryway for the workers. For convenience of on-site erection, the decontamination unit is modular with the modules sealingly connected in a series with each module connected the one to the other. Unique air inlet diffusers provide inflowing makeup air, and the devices are interlocked so that, upon loss of negative pressure in the containment area, a standby air filter becomes operational. Upon the occurrence of an emergency--a fire, explosion or power failure, in which a loss of pressure differential is experienced, the air inlets and outlets close and standby units are operated from alternate power sources.
REFERENCES:
patent: 4902315 (1990-02-01), Spicer
patent: 5053065 (1991-10-01), Garay et al.
patent: 5074897 (1991-12-01), Sikich
patent: 5099751 (1992-03-01), Newman et al.
Arco Restoration, Inc.
Hart Charles
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